. >> paul barrett, thanks very much for injoing us. >> my pleasure. >> president obama weighed in. >> some of the concerns we have learned about have to give parents pause and, you know, as i said before, i feel differently about the nfl. these are grown men. pop warner high school, college. i want to make sure that we're doing everything we can to make the sport safer. >> so do you think we need to change the way the game is played in order to ensure player safety? peggy brand says, i think what the nfl is doing right now is a step in the right direction. i'm glad my son decided to stop playing in seventh grade. i probably want to ask him to stop. like us on facebook and join the conversation. >>> up next, undaunted. from the home front to the combat zone. the author whose stories of military spouses inspired the hit series "army wives" brings us the real lives of women in uniform. ♪ [ male announcer ] why do more emergency workers everywhere trust duracell...?? duralock power preserve. locks in power for up to 10 years in storage. now...guaranteed. duracell with duralock. trusted every